TPS3839A09DQNR

Supervisors Overview

The TPS3839A09DQNR is a single-channel voltage supervisor manufactured by Texas Instruments, designed for simple reset and power-on reset applications. It features a push-pull/totem pole output with active-low reset signaling. The device monitors a single input voltage against a precise threshold of 0.9V. It ensures system reliability through a minimum reset timeout of 120ms. The component operates within an ambient temperature range of -40°C to 85°C and is housed in a compact 4-X2SON (1x1) surface-mount package with exposed pad.

Supervisors Feature Summary

• Provides active-low reset signal via push-pull output stage
• Monitors single voltage channel with 0.9V threshold accuracy
• Ensures stable operation with minimum 120ms reset timeout

Supervisors Applications

• Embedded system power monitoring
• Microcontroller reset circuitry
• Portable electronic device supervision

Supervisors Procurement Notes

Verify the complete part number including suffix DQNR to ensure correct tape-and-reel packaging configuration. Confirm that the 0.9V threshold aligns with the target supply rail requirements. Check RoHS3 compliance status if required by specific environmental regulations. Ensure ESD handling procedures are followed during assembly due to the small form factor.

Supervisors Selection Notes

Select this component when a low-voltage threshold near 0.9V is required for supervising battery or logic rails. The 4-X2SON package suits space-constrained designs compared to larger packages. Consider the 120ms minimum timeout for systems requiring faster recovery than standard supervisors. Verify compatibility with the target microcontroller's reset input requirements.

Supervisors Part Context

This part belongs to the TPS3839 family of ultra-low-power voltage supervisors from Texas Instruments. The series offers various threshold options to accommodate different voltage rails. The A09 suffix specifically denotes the 0.9V threshold variant. It complements other PMIC solutions by providing dedicated reset functionality without complex configuration.

Supervisors Replacement Considerations

TPS3839G33DQNR

Supervisors FAQ

What is the reset output polarity?

The reset output is active-low.

Does this device include a manual reset input?

No, it is a simple reset/power-on reset type without manual reset capability.